* Filtered data packages now have the same `.fs` attribute as their parent package
0.7
* **Backwards incompatible**: `Datapackage.groups` no longer sorts group labels. Sorting breaks implied ordering for matrix construction.
0.6.1
* Moved dehydration and rehydration to `DatapackageBase` so they are available to `FilteredDatapackage` as well.
0.6
* Define, document, and test interface dehydration and rehydration. `Datapackage.define_interface_resource` changed to `Datapackage.rehydrate_interface`. * Removed the cache from `Datapackage.get_resource`. It was counterproductive.
0.5
* Add tests for resource dtypes and shapes in add_X functions. Fixes [11](https://github.com/brightway-lca/bw_processing/issues/11). * Combined `exclude_resource_group` and `exclude_resource_group_kind` into `exclude`